Attributes

Brand	-
Category	Industrial Small Parts / Connectors and Fasteners
Origin	-
Material	T2 Red Copper
Thread Standard	Metric Coarse (ISO)
Size Range	M3, M4, M5, M6, M8, M10, M12, M16
Surface Finish	Polished
Head Type	Hexagon Head
Package Contents	Bolts, Nuts, Flat Washers
Total Piece Count	120 Pieces
Electrical Conductivity	≥98% IACS
Storage Case	Plastic Organizer Box Included
Country of Origin	China

5 reviews

Anonymous

Apr 16, 2026

Rating: 5/5

Nice organizer box

The plastic box keeps everything sorted by size. It saves a lot of time when I need a specific M6 or M8 bolt quickly.

Anonymous

Apr 01, 2026

Rating: 5/5

Perfect conductivity

Tested with a multimeter compared to steel bolts. The resistance is significantly lower. Great for battery connections in my solar setup.

Anonymous

Mar 16, 2026

Rating: 5/5

Fast shipping and well protected

Arrived quickly and nothing was tarnished. The packaging prevented the copper from scratching during transit. Will buy again.

Anonymous

Mar 03, 2026

Rating: 5/5

Excellent for grounding projects

Used these for a ham radio grounding setup. The conductivity is great and the variety of sizes meant I had the right fit for every terminal.

Anonymous

Feb 02, 2026

Rating: 4/5

Good value assortment

Overall very happy with the set. The copper is soft as expected, so be careful not to overtighten. One nut was slightly stripped but the rest were perfect.

5 FAQ

Q: Are these bolts solid copper or plated?

A: These are made from solid T2 red copper, not plated steel.

Q: Do you carry M20 sizes in this series?

A: Currently, this set ranges from M3 to M16. We do not stock M20 in this specific kit.

Q: What wrench size is needed for the M8 bolts?

A: A standard 13mm wrench or socket is required for the M8 hex head bolts.

Q: Are the washers flat or spring washers?

A: This set includes flat washers. Spring washers are not included in this package.

Q: Will these corrode if used outdoors?

A: Copper oxidizes over time which forms a patina. For outdoor use, we recommend applying a protective coating.

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